How severe is CVE-2020-9041?

CVE-2020-9041 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-9041 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9041?

CVE-2020-9041 primarily affects Couchbase Couchbase Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-9041?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-9041 published?

CVE-2020-9041 was published on 2020-06-08 and last updated on 2026-06-17.

CVE-2020-9041

CVE-2020-9041 is a high-severity vulnerability in Couchbase Couchbase Server with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-404.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-404
Affected product: Couchbase Couchbase Server
Published: 2020-06-08
Last modified: 2026-06-17

Description

In Couchbase Server 6.0.3 and Couchbase Sync Gateway through 2.7.0, the Cluster management, views, query, and full-text search endpoints are vulnerable to the Slowloris denial-of-service attack because they don't more aggressively terminate slow connections.

Frequently asked questions

What is CVE-2020-9041?: In Couchbase Server 6.0.3 and Couchbase Sync Gateway through 2.7.0, the Cluster management, views, query, and full-text search endpoints are vulnerable to the Slowloris denial-of-service attack because they don't more aggressively terminate slow connections.
How severe is CVE-2020-9041?: CVE-2020-9041 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-9041 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9041?: CVE-2020-9041 primarily affects Couchbase Couchbase Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-9041?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-9041 published?: CVE-2020-9041 was published on 2020-06-08 and last updated on 2026-06-17.

References

https://www.couchbase.com/resources/security#SecurityAlerts

Affected products (2)

cpe:2.3:a:couchbase:couchbase_server:6.0.3:*:*:*:*:*:*:*
cpe:2.3:a:couchbase:sync_gateway:*:*:*:*:*:*:*:*

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